with this type of locking system you won't be able to turn the wheel around this is what this sort of locking system is designed to stop you haven your wheels and things stolen and also to stop the wheels from moving around.If a thief came a long and was unable to turn your wheel more then likely he wouldnt even bother to steal your bike he would have to carry it away and to be honest carrying a 20 kilo bike is not going to much fun anywhere i am sure most people wouldnt be able to carry it far so they would just leave it alone and not bother with it. i have been reading more about this locks and you cannot grind them off either so it would be pointless even trying to.
Thanks for the link, appreciated. I do however thing you are wrong in your thinking.
Much the same a Pinhead security nuts, these prevent cycle parts being removed but will not prevent the wheels rotating.
The locks that you have linked to do look very well made and a lot nicer than the Pinhead versions. Should I have need to lock parts I may give these a try.
Thanks SRS